1 /******************************************************************************/
2 /* */
3 /* Copyright (c) Ulrich Drepper <drepper@redhat.com> */
4 /* Copyright (c) International Business Machines Corp., 2009 */
5 /* */
6 /* This program is free software; you can redistribute it and/or modify */
7 /* it under the terms of the GNU General Public License as published by */
8 /* the Free Software Foundation; either version 2 of the License, or */
9 /* (at your option) any later version. */
10 /* */
11 /* This program is distributed in the hope that it will be useful, */
12 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
14 /* the GNU General Public License for more details. */
15 /* */
16 /* You should have received a copy of the GNU General Public License */
17 /* along with this program; if not, write to the Free Software */
18 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
19 /* */
20 /******************************************************************************/
21 /******************************************************************************/
22 /* */
23 /* File: eventfd2_02.c */
24 /* */
25 /* Description: This Program tests the new system call introduced in 2.6.27. */
26 /* Ulrich´s comment as in: */
27 /* http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e7d476dfdf0bcfed478a207aecfdc84f81efecaf */
28 /* which says: */
29 /* This patch adds support for the EFD_NONBLOCK flag to eventfd2. The */
30 /* additional changes needed are minimal. The following test must be adjusted */
31 /* or architectures other than x86 and x86-64 and in case the syscall numbers */
32 /* changed. */
33 /* */
34 /* Usage: <for command-line> */
35 /* eventfd2_02 [-c n] [-e][-i n] [-I x] [-p x] [-t] */
36 /* where, -c n : Run n copies concurrently. */
37 /* -e : Turn on errno logging. */
38 /* -i n : Execute test n times. */
39 /* -I x : Execute test for x seconds. */
40 /* -P x : Pause for x seconds between iterations. */
41 /* -t : Turn on syscall timing. */
42 /* */
43 /* Total Tests: 1 */
44 /* */
45 /* Test Name: eventfd2_02 */
46 /* */
47 /* Author: Ulrich Drepper <drepper@redhat.com> */
48 /* */
49 /* History: Created - Jan 13 2009 - Ulrich Drepper <drepper@redhat.com> */
50 /* Ported to LTP */
51 /* - Jan 13 2009 - Subrata <subrata@linux.vnet.ibm.com> */
52 /******************************************************************************/
53 #include <fcntl.h>
54 #include <stdio.h>
55 #include <unistd.h>
56 #include <sys/syscall.h>
57 #include <errno.h>
58
59 #include "test.h"
60 #include "lapi/fcntl.h"
61 #include "linux_syscall_numbers.h"
62
63 #define EFD_NONBLOCK O_NONBLOCK
64
65 char *TCID = "eventfd2_02";
66 int testno;
67 int TST_TOTAL = 1;
68
69 /* Extern Global Functions */
70 /******************************************************************************/
71 /* */
72 /* Function: cleanup */
73 /* */
74 /* Description: Performs all one time clean up for this test on successful */
75 /* completion, premature exit or failure. Closes all temporary */
76 /* files, removes all temporary directories exits the test with */
77 /* appropriate return code by calling tst_exit() function. */
78 /* */
79 /* Input: None. */
80 /* */
81 /* Output: None. */
82 /* */
83 /* Return: On failure - Exits calling tst_exit(). Non '0' return code. */
84 /* On success - Exits calling tst_exit(). With '0' return code. */
85 /* */
86 /******************************************************************************/
cleanup(void)87 void cleanup(void)
88 {
89
90 tst_rmdir();
91 }
92
93 /* Local Functions */
94 /******************************************************************************/
95 /* */
96 /* Function: setup */
97 /* */
98 /* Description: Performs all one time setup for this test. This function is */
99 /* typically used to capture signals, create temporary dirs */
100 /* and temporary files that may be used in the course of this */
101 /* test. */
102 /* */
103 /* Input: None. */
104 /* */
105 /* Output: None. */
106 /* */
107 /* Return: On failure - Exits by calling cleanup(). */
108 /* On success - returns 0. */
109 /* */
110 /******************************************************************************/
setup(void)111 void setup(void)
112 {
113 /* Capture signals if any */
114 /* Create temporary directories */
115 TEST_PAUSE;
116 tst_tmpdir();
117 }
118
main(int argc,char * argv[])119 int main(int argc, char *argv[])
120 {
121 int fd, fl;
122
123 if ((tst_kvercmp(2, 6, 27)) < 0) {
124 tst_brkm(TCONF, NULL,
125 "This test can only run on kernels that are 2.6.27 and higher");
126 }
127 setup();
128
129 tst_count = 0;
130 fd = ltp_syscall(__NR_eventfd2, 1, 0);
131 if (fd == -1) {
132 tst_brkm(TFAIL, cleanup, "eventfd2(0) failed");
133 }
134 fl = fcntl(fd, F_GETFL);
135 if (fl == -1) {
136 tst_brkm(TBROK, cleanup, "fcntl failed");
137 }
138 if (fl & O_NONBLOCK) {
139 tst_brkm(TFAIL, cleanup, "eventfd2(0) sets non-blocking mode");
140 }
141 close(fd);
142
143 fd = ltp_syscall(__NR_eventfd2, 1, EFD_NONBLOCK);
144 if (fd == -1) {
145 tst_brkm(TFAIL, cleanup, "eventfd2(EFD_NONBLOCK) failed");
146 }
147 fl = fcntl(fd, F_GETFL);
148 if (fl == -1) {
149 tst_brkm(TBROK, cleanup, "fcntl failed");
150 }
151 if ((fl & O_NONBLOCK) == 0) {
152 tst_brkm(TFAIL, cleanup,
153 "eventfd2(EFD_NONBLOCK) didn't set non-blocking mode");
154 }
155 close(fd);
156 tst_resm(TPASS, "eventfd2(EFD_NONBLOCK) PASSED");
157
158 cleanup();
159 tst_exit();
160 }
161